21102200196 has 96 divisors (see below), whose sum is σ = 61477678080. Its totient is φ = 5473104000.

The previous prime is 21102200167. The next prime is 21102200267. The reversal of 21102200196 is 69100220112.

It is a super-2 number, since 2×21102200196² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631435 + ... + 664013.

It is an arithmetic number, because the mean of its divisors is an integer number (640392480).

Almost surely, 2^21102200196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21102200196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30738839040).

21102200196 is an abundant number, since it is smaller than the sum of its proper divisors (40375477884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102200196 is a wasteful number, since it uses less digits than its factorization.

21102200196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33305 (or 33303 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 21102200196 in words is "twenty-one billion, one hundred two million, two hundred thousand, one hundred ninety-six".